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New Member

controlling outgoing traffic among dual links BGP

Dear team,

What is the best approach to activate dual links load sharing or load balancing using routing protocol over the internet ?

If we have two ISP links coming to two routers and the ISP is using BGP to connect with us, what is the best approach to implement the following:

1- if we have equal links from ISP

2- if we have unequal links

How can we control the outgoing traffic to have the ratio for example 1:3 in case of unequal links.

Thanks a lot

The setup is the following:

Edge switch 2960 core switch 6509  ASA  router

Everyone's tags (5)
2 ACCEPTED SOLUTIONS

Accepted Solutions
Cisco Employee

controlling outgoing traffic among dual links BGP

Hi,

With BGP, you can play with the number of routes learned from each ISP neighbor. That can load share the outbound direction traffic.

HTH,

Lei Tian

New Member

controlling outgoing traffic among dual links BGP

Hi,

You can implement PFR/OER to perform in inbound and outbound load balancing.

reference:http://www.cisco.com/en/US/products/ps8787/products_ios_protocol_option_home.html

Regards,

Sathvik

3 REPLIES
Cisco Employee

controlling outgoing traffic among dual links BGP

Hi,

With BGP, you can play with the number of routes learned from each ISP neighbor. That can load share the outbound direction traffic.

HTH,

Lei Tian

New Member

controlling outgoing traffic among dual links BGP

many solutions were disucssed among our firends such as:

but can we have solution to load unequal links without link controller

Establish EIGRP adjacencies with your ASA and each WAN edge router.

Inbound, if you have a public prefix, and its large enough, split it in two.

Advertise half out each connection, prepend the other half on each link for link failure.

As long as the ASA receives the same internet routes out of both routers it should use ECMP to load balance outbound.

The advertisement of two halves of your prefix wont give you load balancing per se.

But it will allow both links to your ISP to get used. Its better than one link just sitting there doing nothing.

New Member

controlling outgoing traffic among dual links BGP

Hi,

You can implement PFR/OER to perform in inbound and outbound load balancing.

reference:http://www.cisco.com/en/US/products/ps8787/products_ios_protocol_option_home.html

Regards,

Sathvik

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